Bava Batra 167: How Far People Go to Commit Fraud

More on the tips and tricks in documents to avoid the possibility of forgery or fraud -- beginning with not leaving too much blank space for someone to sneak additional text into the document. With the example of a toll collector and the attempt to get out of paying the toll. And an example of doctoring a letter in a document as an easy means of stealing property (in a deed). Also, when the two parties involved in the transaction of a document need to be present at the scribe who writes the document, and when is one of them sufficient? Plus, how well does the scribe need to know the parties involved? (Lest one misuse the document for someone else with the same name)